To get LLE to work properly you need to run the game full-speed. If you can't run your game full-speed the sound will be choppy. So it depends more on the game you're playing than LLE itself.
Alternatively you can use latest builds with HLE (new AX-HLE) but the problem will be the same. You need to run the game full-speed to get new AX-HLE to work properly. However HLE is a bit less demanding than LLE.
Now some games will work fine with your CPU. But your CPU will be too weak for the most demanding games. And for these games you can forget LLE